Adjustment and testing device for a load-limiting hoist

ABSTRACT

An adjustment and testing device for a load-limiting hoist is disclosed, comprising a frame, a variable frequency motor reducing mechanism, an adjusting turntable operating mechanism and an electric control system. The variable frequency motor reducing mechanism comprises a reducing motor and a torque sensor. The torque sensor is connected with a transmission shaft. The upper end of the transmission shaft is connected with a driving shaft. The driving shaft is connected with a driving wheel. The driving wheel is connected with a driven wheel. The driven wheel is internally connected with a driven shaft. The upper end of the driven wheel is connected with a turntable. The upper end of the turntable is equipped with a load limiter member. The adjusting turntable operating mechanism comprises a locking device, a quick safety block and an adjusting spanner. The electric control system comprises a tool kit, an inverter and a time relay. The tool kit is internally provided with a dynamometer controller and a frequency-to-voltage converter. The present invention overcomes the defects of traditional debugging methods. The debugging device consists of a set of special torque sensors and electric control mechanism, with operational convenience and high working efficiency. Due to low test error, the test result is more accurate.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to a debugging device, in particular to adebugging device of a hoist load limiter.

2. Description of Related Art

At present, the load limiter debugging method of manual hoists is trailhoisting debugging after the whole device is installed and secured on atrail hoisting device. Testing and debugging cannot proceed at the sametime. Each time, the testing operation proceeds only when the debuggingof the load limiter stops, and the process is complicated.

The principle of the load limiter of the manual hoist is as follows: themaximum friction force of the friction pair is equal to the slidingfriction force F=μN. μ is the friction coefficient, determined by thesurface state of two contact surfaces; N is a pressure applied on thefriction face. In actual application, the pressing block in the loadlimiter and the friction plate are fixed, which means that u isdetermined. At this time, the friction force is adjusted by adjustingthe pressure between the pressing block in the friction pair and thefriction plate. The value of the friction force is the maximum limitedload when the hoist works.

It manual lifting/manual spanning hoist is used as an example. Accordingto the technical requirements, the load limiting force shall be equal toan external force applied by the gravity of an object with a weight of1.3-1.6 t, namely when an external force of 1.3×104N is loaded, thehoist can smoothly perform the lifting operation while the load limiterdoes not slide and the friction force does not generate slidingfriction; when an external force over 1.6×104N is loaded, the loadlimiter slides and the friction pair generates sliding friction when thehoist performs the lifting operation.

The debugging operation is as follows: suspend the lifting hook on thehoist on a firm beam and connect the lower hook to a hydraulic cylinderwith adjustable pulling force. When the hoist performs lifting, thepulling force of the hydraulic cylinder increases gradually. Observe theworking situation of the load limiter when the pulling force reaches1.6×104N. If the load limiter slides when the pulling force does notreach 1.6×104N, stop the lifting operation of the hoist and fasten theself-locking nut of the load limiter. Repeat the above operations andfasten or loosen the self-locking nut on the load limiter to ensure thatthe load limiter slides when the load limiting force is just over1.6×104N.

In the traditional debugging process, the self-locking nut and the loadlimiter rotates together, so trail hoisting and regulation of the loadlimiting force cannot proceed at the same time, and multiple repeatedoperations are needed, so the efficiency is low. The fasteningadjustment of the self-locking nut completely depends on the hand feelof the operator, and the process parameters cannot be effectivelycontrolled, so if the load limiter is adjusted by using the traditionalmethod, the load limiting forces of the load limiters may be a littledifferent, so the quality uniformity is undesirable.

BRIEF SUMMARY OF THE INVENTION

The objective of the present invention is to provide a debugging deviceof a hoist load limiter, overcoming the defects of the traditionaldebugging methods. The debugging device consists of a set of specialtorque sensors and electric control mechanisms, with operationconvenience and high working efficiency. Due to low test error, the testresult is more accurate.

To solve the above technical problem, the following technical solutionis employed.

A debugging device of a hoist load limiter, comprising a frame, avariable frequency motor reducing mechanism, an adjusting turntableoperating mechanism and an electric control system, characterized inthat, the variable frequency motor reducing mechanism comprises areducing motor and a torque sensor; the reducing motor and the torquesensor are both installed at the lower end of the frame; the reducingmotor and the torque sensor are mutually connected; the torque sensor isconnected with a transmission shaft; the upper end of the transmissionshaft is connected with a driving shaft; the driving shaft is connectedwith a driving wheel; the driving wheel is connected with a drivenwheel; the driven wheel is internally connected with a driven shaft; thedriven shaft is secured on the frame; the upper end of the driven wheelis connected with a turntable; the turntable is connected with thedriven shaft; the upper end of the turntable is equipped with a loadlimiter member; and the load limiter member is connected with the drivenshaft. The adjustable turntable operating mechanism comprises a lockingdevice, a quick safety block and an adjustable spanner; the lockingdevice is connected with the load limiter member; the quick safety blockis connected with the locking device; the adjusting spanner is matchedwith the load limiter member. The electric control system comprises atool kit, an inverter and a time relay; the inverter is disposed at thefame; the inverter is matched with the reducing motor; the time relay isdisposed at the frame; the time relay is matched with the reducingmotor; the tool kit is disposed at the upper end of the frame; and thetool kit is internally provided with a dynamometer controller and afrequency-to-voltage converter. One end of the frequency-to-voltageconverter is connected with the torque sensor, and the other end of thefrequency-to-voltage converter is connected with the dynamometercontroller. The reducing motor is a power output unit. The transmissionshaft, a driving shaft, a driven wheel, a driven wheel and a drivenshaft constitute a transmission device. When the transmission device isworking, the turntable is driven to rotate such that the load limitermember is in the rotating state, which is simple to realize, easy tooperate and greatly reduces the labor intensity of the work. Theturntable can meet the running-in and debugging of the load limitermembers of manual hoists of different tons, so the service scope iswider. The locking device is limited at the position of the load limitermember, avoiding problems such as sliding during debugging.

The adjusting spanner can adjust the revolving speed and torque of theload limiter member and coordinate in debugging of the load limitermember, and has a simple structure. The electric control system cancooperate with the torque sensor to detect parameters such as therevolving speed and torque of the reducing motor on the one hand, and onthe other hand, can control the whole device. The use is veryconvenient, and the test result is more accurate than that of the manualdebugging.

Furthermore, the lower end of the frame is provided with a locationmounting plate; the upper end of the location mounting plate is securedwith the reducing motor and the torque sensor; the lower end of thelocation mounting plate is secured with an output gear and an inputgear; the output gear is connected with the reducing motor; the inputgear is connected with the torque sensor; and the output gear and theinput gear are matched. The location mounting plate plays the securingrole, and the input gear and the output gear can be chelated with eachother, thus driving the transmission shaft to rotate.

Furthermore, an adjusting bolt is located between the location mountingplate and the frame; and the adjusting bolt is connected with anadjusting nut. The adjusting nut and the adjusting bolt can ensure theverticality and degree of parallelism between the transmission shaft andthe bearing base such that the transmission shaft has an axial clearanceand the transmission shaft can rotate normally.

Furthermore, the torque sensor is provided with a sensor mounting rack,and the sensor mounting rack is secured at the location mounting plate.The sensor mounting rack is used to secure the torque sensor.

Furthermore, the upper end of the torque sensor is connected with aclutch; the upper end of the clutch shaft is connected with a coupling;and the coupling is connected with the transmission shaft. The clutchshaft brings convenience not only to separation of the torque sensor andthe transmission shaft, but also the engagement of the torque sensor andthe transmission shaft, ensuring stable engagement and quick andcomplete separation. The coupling has buffer and damping effects and canimprove the axial dynamic performance.

Furthermore, the frame is provided with a test bed faceplate; the testbed faceplate secures the driven shaft; the test bed faceplate isprovided with a bearing base; and the bearing base is internallyconnected with the driven shaft. The test bed faceplate plays a supportrole, and the bearing base limits the position of the driving shaft,bringing convenience to off tracking

Furthermore, the outside of the turntable is connected with a couplingplate; the coupling plate is secured with the locking device; and thelocking device is equipped with a locating pin. The coupling platesecures the locking device, and the locating pin plays the role oflocation.

Furthermore, the load limiter member is internally provided with a loadlimiter adjusting nut, and the load limiter adjusting nut is matchedwith the adjusting spanner. By adjusting the adjusting number and usingthe adjusting spanner, the torque and revolution speed can be adjusted.

Furthermore, the frame surface is provided with a power switch, a startswitch, a stop switch, an emergency stop switch and a speed adjustingbutton; the start switch is matched with the inverter; the stop switchis matched with the inverter; and the speed adjusting button is matchedwith the inverter. The start switch starts the inverter. The stop switchstops the inverter. The power switch can power on or off the wholedevice. The emergency stop switch can suddenly stop the device in anemergency. The speed adjusting button can adjust the revolving speed ofthe reducing motor through the inverter.

Furthermore, the tool kit is provided with a reset switch, a revolvingspeed display window, a torque display window, an output power display,a current window and an instrument power switch; the revolving speeddisplay window is matched with the dynamometer controller; and thetorque display window is matched with the dynamometer controller. Therevolving speed display window displays the revolving speed of thereducing motor. The torque display window displays the torque of thereducing motor. The output power display displays the output power ofthe reducing motor. The current window displays the current value.

The above technical solution has the following beneficial effects:

The present invention provides a debugging device of a hoist loadlimiter, overcoming the defects of traditional debugging methods. Thedebugging device consists of a set of special torque sensors andelectric control mechanism, with operation convenience and high workingefficiency. Due to low test error, the test result is more accurate. Thepresent invention has the following beneficial effects:

1. Debugging of the load limiting force of the load limiter member canbe implemented alone, saving the operation of the moving the wholemanual hoist device and reducing the labor intensity.

2. The load limiting force of the load limiter member can be directlyand accurately reflected on the debugging console.

3. The present invention can also realize trail hoisting and debuggingat the same time, without complicated start and stop operations. At thesame time, the load limiting force can be directly and accuratelyreflected on the debugging console.

4. A skilled worker with 7-8 years of experience needs 2 min to completethe debugging operation. Using the present invention, it only takes 30 sto complete the debugging work of a load limiter member after simpletraining

5. The working efficiency of the debugging operation and the accuracy ofthe load limiter part are greatly improved and good for control over thequality uniformity and realization of the assembling stability.

The reducing motor is a power output unit. The transmission shaft, adriving shaft, a driving wheel, a driven wheel and a driven shaftconstitute a transmission device. When the transmission device isworking, the turntable is driven to rotate such that the load limitermember is in the rotating state, which is simple to realize, easy tooperate and greatly reduces the labor intensity of the work. Theturntable can meet the running-in and debugging of the load limitermembers of manual hoists of different tons, so the service scope iswider. The locking device limits the position of the load limitermember, avoiding problems such as sliding during debugging. Theadjusting spanner can adjust the revolving speed and torque of the loadlimiter member and coordinate in the debugging of the load limitermember, and has a simple structure. The electric control system cancooperate with the torque sensor to detect parameters such as therevolving speed and torque of the reducing motor on one hand, and on theother hand, can control the whole device. The use is very convenient,and the test result is more accurate than that of manual debugging.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The present invention is described in further detail with reference tothe attached drawings.

FIG. 1 is a structural view of a debugging device of a hoist loadlimiter of the present invention.

FIG. 2 is a perspective view of FIG. 1 in direction A.

FIG. 3 is a structural view of FIG. 1 in direction B.

FIG. 4 is an assembling view of a variable frequency motor reducingmechanism in the present invention.

FIG. 5 is a structural view of a load limiter member in the presentinvention.

FIG. 6 is a schematic view of the electric control of an inverter in thepresent invention.

FIG. 7 is a schematic view of testing of the revolving speed and torqueof a reducing motor in the present invention.

FIG. 8 is a structural view of an input gear of the present invention.

FIG. 9 is a structural view of an output gear of the present invention.

FIG. 10 is a structural view of a driving shaft of the presentinvention.

FIG. 11 is a structural view of a driving wheel of the presentinvention.

FIG. 12 is a structural view of a driven shaft of the present invention.

FIG. 13 is a structural view of a driven wheel of the present invention.

In FIG. 6, SB1 represents an emergency stop switch; SB2 represents astop switch; and SB3 represents a start switch.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIGS. 1-13, a debugging device of a hoist load limitercomprises a frame 26, a variable frequency motor reducing mechanism, anadjusting turntable operating mechanism and an electric control system.The frame 26 consists of an upper part and a lower part. The whole frame26 is L-shaped. In the upper part area, a tool kit 13 and a test bedfaceplate 43 are installed, and in the lower part area, a locationmounting plate 48 is erected. The variable frequency motor reducingmechanism comprises a reducing motor 10 and a torque sensor 8. Thereducing motor 10 and the torque sensor 8 are both installed on thelocation mounting plate 48, and the torque sensor 8 is secured through asensor mounting rack 47. After being secured, the torque sensor 8 hashigh stability, without deviation because of vibration. The lower end ofthe location mounting plate 48 is equipped with an input gear 7 and anoutput gear 5. The input gear 7 and the output gear 5 are both providedwith gear teeth on the surface and connected through the gear teeth sothat output gear 5 can drive the input gear 7 to rotate when rotating.The output gear 5 is connected with the reducing motor 10. The inputgear 7 is connected with the torque sensor 8. When the reducing motor 10starts to work, the revolving speed output by the reducing motor 10 istransmitted to the torque sensor 8 through the output gear 5 and theinput gear 7 in turn. The torque sensor 8 is connected with atransmission shaft 45, so the transmission shaft 45 can rotate whendriven by the torque sensor 8. Meanwhile, the transmission shaft 45 andthe torque sensor 8 are connected through a clutch shaft 46 and acoupling 9; the clutch shaft 46 is connected with the torque sensor 8;and the coupling 9 is connected with the transmission shaft 45. Theclutch shaft 46 brings convenience not only to the separation of thetorque sensor 8 and the transmission shaft 45, but also the engagementof the torque sensor 8 and the transmission shaft 45, ensuring stableengagement and quick and complete separation. The coupling 9 has bufferand damping effects and can improve the axial dynamic performance.Meanwhile, an adjusting bolt 49 is located between the location mountingplate 48 and the frame 26; and the adjusting bolt 49 is connected withan adjusting nut 50. The adjusting nut 50 and the adjusting nut 49 canensure the verticality and degree of parallelism between thetransmission shaft 45 and the bearing base 27, such that thetransmission shaft 45 has an axial clearance and the transmission shaft45 can rotate normally.

The upper end of the transmission shaft 45 penetrates through the testbed faceplate 43 and is connected with the driving shaft 31. The drivingshaft 31 is secured through the bearing base 27. The bearing base 27 issecured at the test bed faceplate 43 through a bolt, so the drivingshaft 31 and the transmission shaft 45 can be stably connected. Anelastic retainer ring 28 and a first deep groove ball bearing 33 aredisposed between the driving shaft 31 and the bearing base 27. Theelastic retainer 28 plays a buffering role, reducing the friction lossbetween the driving shaft 31 and the bearing base 27; the first deepgroove ball bearing 33 has a low friction coefficient, a high limitingrevolving speed, a simple structure, and ensures the smooth rotation ofthe driving shaft 31. The driving shaft 31 is connected with the drivenwheel 30. During rotation, the transmission shaft 45 transmits therotary motion state to the driving wheel 30 through the driving shaft31. A common flat key 32 is disposed between the driving wheel 30 andthe driving shaft 31. The common flat key 32 has high centering and highlocation accuracy, and brings convenience to the dismantling and theassembling of the driving wheel 30 and the driving shaft 31.Furthermore, the driving wheel 30 is connected with the driven wheel 29.The driving wheel 30 and the driven wheel 29 are mutually engaged, sothe driving wheel 30 rotates to drive the driven wheel 29 to rotate. Thedriven wheel 29 is internally connected with the driven shaft 35, andthe driven shaft 35 is secured on the test bed faceplate 43 throughbolts, so the relative positions of the driven shaft 35 and the test bedfaceplate 43 do not change. A second deep groove ball bearing 42 and anisolating sleeve 41 are disposed between the driven shaft 35 and thedriven wheel 29; the second deep groove ball bearing 42 has a lowfriction coefficient, a high limiting revolving speed and a simplestructure, ensuring the smooth rotation of the driven shaft 35 and thedriven wheel 29; the isolating sleeve 41 plays a buffering role,reducing the friction loss between the driven shaft 35 and the drivenwheel 29. The upper end of the driven wheel 29 is connected with aturntable 34. The turntable 34 and the driven wheel 29 are securedthrough bolting. The turntable 34 and the driven wheel 35 are mutuallyconnected. The upper end of the turntable 34 is equipped with a loadlimiter member 1. The load limiter member 1 is connected with the drivenwheel 35. The load limiter member 1 and the driven shaft 35 areconnected with a washer 37 there-between. The washer 37 plays abuffering role, reducing the friction loss between the driven wheel 35and the load limiter member 1. The working process is as follows: Afterstartup, the reducing motor 10 drives the transmission shaft 45 torotate, through transmission by the driving wheel 31, the driving wheel30, the driven shaft 35 and the driven wheel 29, drives the turntable 34to rotate, and then further drives the load limiter member 1 to go intothe rotary state, which is the premise of realizing the debugging of theload limiter member 1. The reducing motor 10 is a power output unit. Thetransmission shaft 45, the driving shaft 31, the driven wheel 30, thedriven wheel 29 and the driven shaft 35 constitute a transmissiondevice. When the transmission device is working, the turntable 34 isdriven to rotate such that the load limiter member 1 is in the rotatingstate, which is simple to realize, easy to operate and greatly reducesthe labor intensity of the work. The turntable 34 can meet therunning-in and debugging of the load limiter members 1 of the manualhoists of different tons, so the service scope is wider.

The operating mechanism of the adjusting turntable 34 comprises alocking device 3, a quick safety block 4 and an adjusting spanner 39.The outside of the turntable 34 is connected with a coupling plate 40.The coupling plate 40 secures the locking device 3. The locking device 3can be connected with the load limiter member 1 and is engaged with theload limiter member 1 through the quick safety block 4, avoidingunnecessary displacement. The locking device 3 is equipped with thelocking pin 2 and the locking pin 2 is used to limit the degree offreedom of movement of the locking device 3. The load limiter member 1is internally provided with a load limiter adjusting nut 36, and theload limiter adjusting nut 36 is matched with the adjusting spanner 39.According to the current revolving speed and torque value, the loadlimiter adjusting nut 36 on the load limiter member 1 can be adjustedthrough the adjusting spanner 39, and the torque is adjusted to thetheoretical torque when sliding. The locking device 3 is limited at theposition of the load limiter member 1, avoiding problems such as slidingduring debugging. The adjusting spanner 39 can adjust the revolvingspeed and torque of the load limiter member 1 and coordinate in thedebugging of the load limiter member 1, and has a simple structure.

The electric control system comprises a tool kit 13, an inverter 25 anda time relay 24. The tool kit 13, the inverter 25 and the time relay 24all are disposed on the frame 26. The inverter 25 is used to control thereducing motor 10. The time relay 24 is used to control the rotationtime of the reducing motor 10, playing the role of switching on and offat fixed times.

The surface of the frame 26 is provided with a power switch 12, a startswitch 19, a stop switch 21, an emergency stop 22 and a speed adjustingbutton 23. The power switch 12 is used to power on or off the wholedevice. The start switch 19 controls the inverter 25 and can start theinverter 25. The stop switch 21 controls the inverter 25 and can poweroff the inverter 25. The emergency stop switch 22 can suddenly stop thewhole device in an emergency. The speed adjusting button 23 adjusts theoperation speed of the reducing motor 10 through the inverter 25. Theworking principle is as follows: After the power switch 12 is pressed,the whole device is electrified; the inverter 25 is supplied with powerand the working time t is set through the time relay 24; after the startswitch 19 is pressed, the inverter 25 works and the reducing motor 10works; after time t, the reducing motor 10 stops working

The tool kit 13 is internally provided with a dynamometer controller 51and a frequency-to-voltage converter 52. The frequency-to-voltageconverter 52 is provided with a sensor input interface 54 and a torqueand revolving speed output interface 55. The dynamometer controller 51is provided with a torque and revolving speed input interface 56.

The torque sensor 8 is provided with a sensor output interface 53. Thesensor output interface 53 is connected with the sensor input interface54. The torque and revolving speed output interface 55 is connected withthe torque and revolving speed input interface 56. The working principleis as follows: When the reducing motor 10 is started, the torque sensor8 feeds back the torque and revolving speed signal, which is transmittedto the frequency-to-voltage converter 52 through the sensor outputinterface 53 and the sensor input interface 54. The frequency-to-voltageconverter 52 converts the signal to an electric signal, which istransmitted to the dynamometer controller 51 through the torque andrevolving speed output interface 55 and the torque and revolving speedinterface 56. Finally, the dynamometer controller 51 obtains therevolving speed value and torque value of the reducing motor 10. Thetool kit 13 is provided with a reset switch 14, a revolving speeddisplay window 15, a torque display window 16, an output power display17, a current window 18 and an instrument power switch 20; the revolvingspeed display window 15 is matched with the dynamometer controller 51;and the torque display window 16 is matched with the dynamometercontroller 51. The revolving speed display window 15 displays therevolving speed of the reducing motor 10. The torque display window 16displays the torque of the reducing motor 10. The output power display17 displays the output power of the reducing motor 10. The currentwindow 18 displays the current value. The power switch 20 is used toswitch on or off the dynamometer controller 51 and thefrequency-to-voltage converter 52. The electric control system cancooperate with the torque sensor 8 to detect parameters such as therevolving speed and torque of the reducing motor 10 on the one hand, andon the other hand, can control the whole device. The use is veryconvenient and the test result is more accurate than that of manualdebugging.

The operation process of the present invention is as follows:

{circle around (1)} Turn on the power switch 12, switch on thedynamometer controller 51, operate the speed adjusting button 23 of theinverter 25 to 10 rpm, place the load limiter member 1 after therotating speed display window 15, the torque display window 16, theoutput power display 17 and the current window 18 to get normal signal,press the start switch 19, the load limiter part 1 turns into the rotatestate, is connected with the locking device and is fastened with thequick safety block 4.

{circle around (2)} According to the value displayed on the torquedisplay window 16, use the adjusting spanner 39 to adjust the loadlimiter adjusting number 36 on the load limiter member 1 until thetorque reading is equal to the theoretical torque value when sliding.

{circle around (3)} Set the time relay 24 to 1-1.5 min, grind and run-inthe friction surface of the load limiter member 1.

{circle around (4)} After 1-1.5 min, the reducing motor 10 stopsautomatically, cool the load limiter member 1 to 2-3 min, and thenaccurately tune to the regulated torque value.

{circle around (5)} Press the stop switch 21, release the quick safetyblock 4, open the locking device 3, take out the load limiter member 1,and then complete the debugging work of the load limiter member 1.

The above are only specific embodiments of the present invention, butthe technical characteristics of the present invention are not limitedto the above embodiments. Any simple changes, equivalent substitution ormodifications on the basis of the present invention to solve basicallythe same technical problems and realize basically the same technicaleffects shall be incorporated into the protective scope of the presentinvention.

1. A debugging device of a hoist load limiter, comprising a frame, avariable frequency motor reducing mechanism, an adjusting turntableoperating mechanism and an electric control system, characterized inthat: the variable frequency motor reducing mechanism comprises areducing motor and a torque sensor; the reducing motor and the torquesensor are both installed at the lower end of the frame; the reducingmotor and the torque sensor are mutually connected; the torque sensor isconnected with a transmission shaft; the upper end of the transmissionshaft is connected with a driving shaft; the driving shaft is connectedwith a driving wheel; the driving wheel is connected with a drivenwheel; the driven wheel is internally connected with a driven shaft; thedriven shaft is secured on the frame; the upper end of the driven wheelis connected with a turntable; the turntable is connected with thedriven shaft; the upper end of the turntable is equipped with a loadlimiter member; the load limiter member is connected with the drivenshaft; the adjustable turntable operating mechanism comprises a lockingdevice, a quick safety block and an adjustable spanner; the lockingdevice is connected with the load limiter member; the quick safety blockis connected with the locking device; the adjusting spanner is matchedwith the load limiter member; the electric control system comprises atool kit, an inverter and a time relay; the inverter is disposed at thefame; the inverter is matched with the reducing motor; the tool kit isdisposed at the upper end of the frame; the tool kit is internallyprovided with a dynamometer controller and a frequency-to-voltageconverter; one end of the frequency-to-voltage converter is connectedwith the torque sensor, and the other end of the frequency-to-voltageconverter is connected with the dynamometer controller.
 2. The debuggingdevice of a hoist load limiter according to claim 1, characterized inthat the lower end of the frame is provided with a location mountingplate; the upper end of the location mounting plate is secured with thereducing motor and the torque sensor; the lower end of the locationmounting plate is secured with an output gear and an input gear; theoutput gear is connected with the reducing motor; the input gear isconnected with the torque sensor; and the output gear and the input gearare matched.
 3. The debugging device of a hoist load limiter accordingto claim 2, characterized in that an adjusting bolt is located betweenthe location mounting plate and the frame; and the adjusting bolt isconnected with an adjusting nut.
 4. The debugging device of a hoist loadlimiter according to claim 2, characterized in that the torque sensor isprovided with a sensor mounting rack and the sensor mounting rack issecured at the location mounting plate.
 5. The debugging device of ahoist load limiter according to claim 1, characterized in that the upperend of the torque sensor is connected with a clutch; the upper end ofthe clutch shaft is connected with a coupling; and the coupling isconnected with the transmission shaft.
 6. The debugging device of ahoist load limiter according to claim 1, characterized in that the frameis provided with a test bed faceplate; the test bed faceplate securesthe driven shaft; the test bed faceplate is provided with a bearingbase; and the bearing base is internally connected with the drivenshaft.
 7. The debugging device of a hoist load limiter according toclaim 1, characterized in that the outside of the turntable is connectedwith a coupling plate; the coupling plate is secured with the lockingdevice; and the locking device is equipped with a locating pin.
 8. Thedebugging device of a hoist load limiter according to claim 1,characterized in that the load limiter member is internally providedwith a load limiter adjusting nut, and the load limiter adjusting nut ismatched with the adjusting spanner.
 9. The debugging device of a hoistload limiter according to claim 1, characterized in that the framesurface is provided with a power switch, a start switch, a stop switch,an emergency stop switch and a speed adjustment button; the start switchis matched with the inverter; the stop switch is matched with theinverter; and the speed adjustment button is matched with the inverter.10. The debugging device of a hoist load limiter according to claim 1,characterized in that the tool kit is provided with a reset switch, arevolving speed display window, a torque display window, an output powerdisplay, a current window and an instrument power switch; the revolvingspeed display window is matched with the dynamometer controller; and thetorque display window is matched with the dynamometer controller.